1. Department of Plant and Animal Production, Mudurnu Süreyya Astarcı Vocational School Bolu Abant Izzet Baysal University Bolu Turkey
2. Department of Plant and Animal Production, Seben Izzet Baysal Vocational School Bolu Abant Izzet Baysal University Bolu Turkey
3. Faculty of Agriculture, Department of Seed Science and Technology Bolu Abant Izzet Baysal University Bolu Turkey
4. Faculty of Agriculture, Department of Horticulture Bolu Abant Izzet Baysal University Bolu Turkey